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Cheap flights from Seattle to Ireland from €228

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:22 - 10:15
SEA
-
SNN
37h 53m
2 stops
United Airlines Logo
12:30 - 23:27
SNN
-
SEA
18h 57m
2 stops
€467United Airlines
Tue, 14 Apr - Sat, 25 Apr
Multiple Airlines Logo
15:40 - 19:20
SEA
-
DUB
19h 40m
2 stops
Multiple Airlines Logo
08:00 - 17:55
DUB
-
SEA
17h 55m
2 stops
€472Multiple Airlines
Thu, 16 Apr - Wed, 22 Apr
United Airlines Logo
12:22 - 10:15
SEA
-
SNN
37h 53m
2 stops
United Airlines Logo
12:30 - 11:48
SNN
-
SEA
31h 18m
2 stops
€477United Airlines
Tue, 14 Apr - Sat, 25 Apr
Icelandair Logo
14:35 - 10:15
SEA
-
DUB
11h 40m
1 stop
Icelandair Logo
11:30 - 18:00
DUB
-
SEA
13h 30m
1 stop
€484Icelandair
Tue, 3 Mar - Tue, 10 Mar
Icelandair Logo
15:40 - 13:15
SEA
-
DUB
13h 35m
1 stop
Icelandair Logo
12:15 - 20:40
DUB
-
SEA
16h 25m
1 stop
€486Icelandair
Wed, 29 Apr - Wed, 13 May
Aer Lingus Logo
21:05 - 19:25
SEA
-
SNN
15h 20m
2 stops
Aer Lingus Logo
16:50 - 17:10
SNN
-
SEA
56h 20m
2 stops
€546Aer Lingus
Sun, 22 Mar - Mon, 30 Mar
KLM Logo
11:20 - 11:10
SEA
-
SNN
15h 50m
1 stop
KLM Logo
13:05 - 22:16
SNN
-
SEA
17h 11m
1 stop
€547KLM
Thu, 28 May - Tue, 16 Jun
Delta Logo
13:30 - 14:40
SEA
-
ORK
17h 10m
2 stops
Delta Logo
06:15 - 11:45
ORK
-
SEA
13h 30m
1 stop
€548Delta
Mon, 30 Mar - Tue, 7 Apr
KLM Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
KLM Logo
13:05 - 00:01
SNN
-
SEA
18h 56m
2 stops
€550KLM
Thu, 28 May - Tue, 16 Jun
Delta Logo
07:15 - 10:20
SEA
-
ORK
19h 05m
2 stops
Delta Logo
06:15 - 16:30
ORK
-
SEA
18h 15m
1 stop
€551Delta
Wed, 1 Apr - Wed, 8 Apr

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
3 Mar
SEA14:35Seattle/Tacoma Intl
11h 40m
1 stop
DUB10:15Dublin
10 Mar
DUB11:30Dublin
13h 30m
1 stop
SEA18:00Seattle/Tacoma Intl
€484
Icelandair
29 Apr
SEA15:40Seattle/Tacoma Intl
13h 35m
1 stop
DUB13:15Dublin
13 May
DUB12:15Dublin
16h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
€486
Icelandair
20 Apr
SEA15:40Seattle/Tacoma Intl
13h 35m
1 stop
DUB13:15Dublin
29 Apr
DUB12:15Dublin
16h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
€487

United Airlines flights from Seattle to Ireland

Our best United Airlines deals on Seattle to Ireland flight tickets
United Airlines
14 Apr
SEA12:22Seattle/Tacoma Intl
37h 53m
2 stops
SNN10:15Shannon
25 Apr
SNN12:30Shannon
18h 57m
2 stops
SEA23:27Seattle/Tacoma Intl
€467
United Airlines
14 Apr
SEA12:22Seattle/Tacoma Intl
37h 53m
2 stops
SNN10:15Shannon
25 Apr
SNN12:30Shannon
31h 18m
2 stops
SEA11:48Seattle/Tacoma Intl
€477
United Airlines
31 Jul
SEA19:54Seattle/Tacoma Intl
27h 36m
2 stops
SNN07:30Shannon
14 Aug
SNN12:30Shannon
41h 48m
2 stops
SEA22:18Seattle/Tacoma Intl
€510

momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 16 February 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 14/4

12:22-10:15

2 stops37h 53m

Shannon

Sat 25/4

12:30-23:27

2 stops18h 57m

€467

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 16/4

15:40-19:20

2 stops19h 40m

Dublin

Wed 22/4

08:00-17:55

2 stops17h 55m

€472

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 14/4

12:22-10:15

2 stops37h 53m

Shannon

Sat 25/4

12:30-11:48

2 stops31h 18m

€477

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/3

14:35-10:15

1 stop11h 40m

Dublin

Tue 10/3

11:30-18:00

1 stop13h 30m

€484

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 29/4

15:40-13:15

1 stop13h 35m

Dublin

Wed 13/5

12:15-20:40

1 stop16h 25m

€486

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 22/3

21:05-19:25

2 stops15h 20m

Shannon

Mon 30/3

16:50-17:10

2 stops56h 20m

€546

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 28/5

11:20-11:10

1 stop15h 50m

Shannon

Tue 16/6

13:05-22:16

1 stop17h 11m

€547

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Mon 30/3

13:30-14:40

2 stops17h 10m

Cork

Tue 7/4

06:15-11:45

1 stop13h 30m

€548

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 28/5

07:15-11:10

1 stop19h 55m

Shannon

Tue 16/6

13:05-00:01

2 stops18h 56m

€550

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Wed 1/4

07:15-10:20

2 stops19h 05m

Cork

Wed 8/4

06:15-16:30

1 stop18h 15m

€551

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Seattle to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

The month of January is another great option to travel to Ireland, with average flight prices from Seattle averaging around €409.

What is the cheapest Seattle/Tacoma Intl to Ireland flight route?

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Ireland flight prices

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €533 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as €474 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Ireland flights?

There is only 1 cabin class available to choose from on Seattle/Tacoma Intl to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Ireland flights?

You could potentially save up to 2% on your flight if you consider stops on a Seattle to Ireland flight.

Cheap Seattle to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Ireland

Fastest flight time

9h 05m

Direct flights

Every day

Airports in Ireland

77 airports
The fastest flight from Seattle to Ireland takes 9h 05m
Direct flights go from Seattle to Ireland every day.
There are 77 airports in Ireland. From Seattle there are direct flights to Dublin (DUB).
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ireland?

    Prices for flights from Seattle/Tacoma Intl Airport to Ireland are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Ireland?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Ireland for you.

Can I find flights from Seattle to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Ireland?

momondo helps you find the best flight between Seattle and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Ireland from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €39
Flights to Corkfrom €85
Flights to Shannon, Clarefrom €104
Flights to Donegalfrom €73
Flights to Milltown (Kerry)from €38